例：

Here's an IOU for the fiver you lent me. I'll pay you back on Monday. 

这是你借给我5英镑的欠条。我星期一还给你。

I'll buy it from you. Name your price, and I'll write you an IOU right here.  

我跟你买。开个价，我给你写欠条。

例：

Thanks for the help, Xiaojiang. I owe you one. 

谢谢你的帮助，小酱。我欠你个人情。

例：

He seems to think the world owes him a living. 

他似乎觉得世人都有义务照顾他。 

No one owes you a living. 

没人有义务养活你。

例：

Take a few days off work - you owe it to yourself. 

休息几天——你理应歇一歇了。

You owe it to yourself to get some professional help. You can't handle it by yourself. 

你自己理应寻求一些专业的帮助了。你自己应付不来。